auto create config folder

.gitpod.Dockerfile

@@ -5,5 +5,6 @@ RUN npm i pm2 -g && \
     sudo apt-get update && \
     sudo apt-get install clang -y && \
     cargo install sonic-server --version 1.3.0 && \
+    mkdir -p /home/gitpod/.hydro && \
     echo '{"host":"127.0.0.1","port":"27017","name":"hydro","username":"","password":""}' >/home/gitpod/.hydro/config.json && \
     echo "MINIO_ACCESS_KEY=hydro\nMINIO_SECRET_KEY=hydrohydro" >/home/gitpod/.hydro/env